Montgomery County, Illinois Age & Gender Distribution (2024)
Population distribution by age and gender for Montgomery County, Illinois
Montgomery County, Illinois Age & Gender Statistics (2024)
Total Population
27,942
Median Age
42.8
Male Median
40.8
Female Median
46.0
Montgomery County, Illinois Population Growth
Montgomery County, Illinois Demographic Trend
Since 2010, the population of has changed by -7.6%%.
-7.6%% Growth
Montgomery County, Illinois Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
Montgomery County, Illinois Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 42.8 | 27,942 |
| 2023 | 42.6 | 28,078 |
| 2022 | 42.7 | 28,352 |
| 2021 | 42.8 | 28,482 |
| 2020 | 43.0 | 28,598 |
| 2019 | 43.3 | 28,828 |
| 2018 | 43.1 | 29,009 |
| 2017 | 42.4 | 29,173 |
| 2016 | 42.4 | 29,301 |
| 2015 | 42.2 | 29,348 |
| 2014 | 41.6 | 29,740 |
| 2013 | 41.9 | 29,878 |
| 2012 | 41.8 | 29,977 |
| 2011 | 41.3 | 30,126 |
| 2010 | 41.4 | 30,230 |
Montgomery County, Illinois Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 5.0% |
| 5–17 | 15.1% |
| 18–24 | 7.0% |
| 25–34 | 12.3% |
| 35–54 | 25.0% |
| 55–64 | 14.1% |
| 65+ | 21.5% |
Dependency Ratios for Montgomery County, Illinois
- Total Dependency Ratio:
- 71.3
- Youth Dependency:
- 34.5
- Old-Age Dependency:
- 36.8
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for Montgomery County, Illinois
The median age in Montgomery County, Illinois is 42.8 years.
According to latest Census data, the total population of Montgomery County, Illinois is 27,942.
In Montgomery County, Illinois, seniors (ages 65+) make up 21.5% of the population, while children under 18 represent 15.1%.
Based on historical data since 2010, the population in Montgomery County, Illinois has remained stable.